“…Indeed, patients' vision can be improved using non-invasive brain stimulation techniques, e.g. repetitive transorbital alternating current stimulation (rtACS) that sends pulsed currents to the retina and brain, (Sabel et al, 2011b;Gall et al, 2011;Schmidt et al, 2013). The postulated mechanism of action of rtACS is re-synchronization of visual M A N U S C R I P T…”